Beating engine



MHZQQ w. WERNER r May M, 1929,

BEATING ENGNE Filed Feb. 15, 1927 Patented -May 14, 1929.

UNITED 4STATI-:s

PATENTV oFFlcE.

WALTER WERNER, OF` HOOSICK FALLS, NEW YORK, ASSIGNOR TO THE NOBLE c WOODMACHINE C0., O1? HOOSICK FALLS, NEW YORK, A CORPORATION OF NEW YORK.

- BEATING ENGINE.

My present invention relates to beating paper and board.

pulping stock for paper, particularly tothe bed plates and beater barsused therein.

The object of this invention is to provide an improved form of bed plateand beater har particularly adapted for use in engmes designed to workover old papers, books, and

other materials vwhich are used as raw stock from which to make thecheaper kinds of Another object of this invention 1s to pro.

duce an improved bed plate adapted for usel in conjunction with suctionor other drawoff means whereby that portion of the raw stock which hasbeen sufficiently pulped and fined may be withdrawn from the beater,escaping from the general mass through holes formed in the bed plate.

A further object of this invention is to provide a bed plate and beaterbar the working surfaces or edges whereof are greater 1n effectivelength, for a given length of roll, than any of the present used types.

The manner in which I have attained my objects is illustrated in theaccompanying drawings, in which:

Fig. l is a vertical cross section through the beater roll, bed plateand back fall.

Fig. 2 isa section along the line on Fig. 1.

Fig. 3 is a partial plan view of my improved bed plate.

The same reference numbers refer to the same parts throughout theseveral views.

Referring to the drawings, 2 represents a lp ortion of the tub, 3 themidfeather, and 4 the beater roll which is preferably so mounted thatits position with relation to the bed plate 5 may be adjusted and thewidth of the opening between the bed late 5, and the bars 6 of thebeater roll 4, e regulated.

The space-between the bed plate and.the beater bars as they pass itbeing of zig zag shape, the effective length of the working edges .ofthe bars is longer than is possible when the edges thereof aresubstantially straight, as in the usual beaters, and the defibreingeffect thereof is correspondingly greater 'the tearing or breakingaction thereof on the coarser portions of the stock being worked, or rawstock which has been reJ cently introduced into the tub, being muchApplication filed February 15, 1927. Serial No. 168,421.

more forcible and rapid than in a usual engine.

As shown in the drawings, my improved bed plate 5 is extended rearwardlyand upwardly and is let into the lower part of the face of the back fall8, and is hollowed out underneath to form a chamber intov which a drawoff or suction pipe 9 may be connected.

The mean face of my improved hed plate 5 is curvcd on a radius somewhatgreater than the radius of the beater roll 4, and is formed into, or hasformed thereon, a series of spaced ridges 7 the size and shape whereofat the point directly beneath the center of the beater roll 4 issubstantially that of thev notches which make a serrated edge on thebeater bars 6, these ridges are curved down at their forward ends so asto offer but slight obstruction to the entrance of raw stock into thespace between the roll and the bed plate, and the rear portions thereofare gradually reduced in height until they finally disappear near theupper edge of the part 5. Rows of holes 10, are provided through whichwater and properly reduced stock may be drawn into, and removed from thehollow in the bed plate by or through the draw off 9. Preferably thereis a row of holes located along the line of the top of each ridge andother rows intermediate the rows opening through the top of the ridges.

While I have shown, and now prefer to make the bed plate 5 as a singlecasting, I may build it up of two or more pieces if the size of the partis such as to make such course desirable.

I claim:

1. The combination in a beating engine of a tub with a back falltherein, an adjustably mounted beater roll the bars whereof haveserrated working edges; a hollow bed plate curving rearwardly andupwardly and having a series of ridges formed on the working facethereof said ridges lying at substantially right angles to the axis ofsaid heater roll, said working face perforated; and a draw offconnecting with the hollow in said bed plate..

2. The combination iu a beating engine of a tub with a back falltherein, a beater roll the bars whereof have serrated working edges; ahollow bed-plate the working face whereof is perforated and has a seriesof ries ,of'parallel transverse ridges.

5. In a beating engine, a tub, a beater roll journaled therein includingbars having notched working edges, a back fall located at one side ofsaid roll, and a hollow bed plate lying beneath the roll and extendedupwardly to lie flush with said back fall, said plate lhaving a seriesof spaced ridges arranged substantially in a. line with the notches ofsaid bars, and at right angles to the axis of said beater roll.

G ln a beating engine, a beater roll including bars having notchedworking edges, a hollow bed plate having a perforated surface curved ona radius somewhat greater than the radius of said roller, and a seriesof serrated ridges formed on said plate and having their high pointssubstantially in a line with the low points of said bars.

7. In a beating engine, a hollow bed plate having a curved perforatedsurface, spaced ridges formed on said surface, a beater roll, said platebeing curved on a radius somewhat greater than the radius of said roll,and

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said roll including bars having notched working edges, with said notchesarranged to pass the ridges on said plate.

1n testimony whereof l have affixed my signature.

WALTER WERNER.

